JPH01161961A - Communication equipment system - Google Patents

Abstract

PURPOSE:To attain quick and proper correspondence even when reception enable quantity is less by recognizing the receptible information quantity from a telephone set at a reception side equipment. CONSTITUTION:When reception is applied and recording paper reaches its near end, a control circuit 1 informs recording paper near end to a telephone set via a data transmission control circuit 14. Thus, a recording paper presence display circuit of the telephone set is deenergized to erase the display of presence of recording paper, and then the remaining receptible line number is checked in the normal standard mode. Concretely, the recording paper residual amount just after the detection of near end mark is 5m, it is obtained by dividing it by a subscanning line density, the value is stored in a receptible line number memory 19 and the outputted line number for each information output is decremented. Thus, the remaining receptible quantity of the data communication equipment is displayed on the connection telephone set to attain proper correspondence.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication device system comprising a plurality of telephones and a plurality of data communication devices connected via a communication medium.

[Prior Art] A conventional communication system in which a plurality of telephones and a plurality of data communication devices are connected via a plurality of communication media includes, for example, a line and an outside line connected to a facsimile machine and a key telephone. There is a system that includes a main controller that accommodates a large number of lines and controls communication paths between each line.

An example of the configuration of this system is shown in FIG. As shown in FIG. 6, a plurality of button telephones AlO2 to button telephone AlO
4 and facsimile device 110, each has extension 13.
1 to 134, and controls the formation of communication paths between these extensions and the communication paths between the extensions and connected external lines 121 and 122. The main controller 101 also includes a power supply unit that supplies power to the key telephone.

On the other hand, as another example, the line 131 connected to the facsimile machine 110 may be a line different from the other extension lines 132 to 134, and this line is normally set to the outside line 121 or the outside line 1.
22, and the manual disconnection consists of a pair of signal lines configured to be disconnected from the outside line using a device or the like. And button telephones 102 to 104
is the dedicated telephone for the main controller, and line 1 is the connection line.
32 to 134 include one pair of signal lines for control and power supply in addition to the normal line signal line, making a total of two pairs of signal lines.

However, in such a system, the button telephone and facsimile device have no relationship with each other; the facsimile device is simply connected to the control device of the button telephone, and there is no organic connection between them. It's not a thing. Therefore, when the line to the facsimile machine is not in use, the key telephone has only the ability to perform call processing using the line for the facsimile machine.

[Problems to be Solved by the Invention] For this reason, when a facsimile device, which is a non-telephone terminal, is receiving information, even if the remaining amount of recording paper becomes small and the number of sheets that can be received decreases, , I had to go to each facsimile machine and check how much power was left. For this reason, there were problems such as not knowing when to replace the recording paper, and reception becoming impossible midway through.

[Means for Solving the Problems] The present invention has been made for the purpose of solving the above-mentioned problems, and as a means for solving the above-mentioned problems, the present embodiment has the following configuration.

That is, in a communication device system in which a plurality of telephones and a plurality of data communication devices are connected via a communication medium, the data communication device includes a receivable amount detection means for detecting the receivable amount of data, and the receivable amount detection means. A transmitting means for transmitting the detected amount to the connected telephone, a receiving means for receiving the transmitted information from the transmitting means to the connected telephone, and a display means for displaying the received amount by the receiving means.

According to a preferred embodiment, the data communication device includes at least a facsimile communication means, the receivable amount is the number of pages that can be printed by the facsimile communication means, and the receivable amount detection means includes a near-end mark on the recording sheet. The apparatus includes a detecting means, recognizes the number of remaining receivable lines after the near-end mark is detected by the near-end mark detecting means, and detects the remaining receivable number of sheets according to transmission conditions.

[Function] With the above configuration, the remaining receivable amount of the data communication device can be displayed on the connected telephone during data communication, and the status of the data communication device can be recognized while sitting at a desk or the like. , it becomes possible to take appropriate measures.

[Example] Hereinafter, an example according to the present invention will be described in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a schematic block diagram of an embodiment according to the present invention, and shows a receiving side device. Components that are the same as those in FIG. 6 are given the same numbers.

In the figure, reference numeral 150 denotes a control device having the same functions as the main control device 101 and facsimile device 110 in FIG. This control device 150 houses two outside lines (office lines connected to the public line network) and three lines 132 to 134 connected to key telephones AlO2 to ClO4. .

These lines 132 to 134 include a pair of signal lines for normal communication and a pair of signal lines for control and power supply.
There are a total of two pairs of signal lines.

As a result, the functions of a conventional facsimile device and a telephone control device are integrated and organically combined.

In the above configuration, in a communication device system in which multiple telephones and multiple data communication devices are connected via a communication medium, when the data communication device is receiving data, the sending side specifies the communication destination. and on the receiving side, the telephone corresponding to the designated communication partner can make a call.

This called destination telephone can be specified during the transmission control procedure following the call setup of the data communication device.

The detailed configuration of the control device 150 described above is shown in FIG. 2.

In FIG. 2, 1 is a control circuit that controls the entire apparatus according to the programs shown in FIGS. 4 (A) to (C), which will be described later, and is stored in ROM 2. 2 is a control circuit that controls the entire apparatus in accordance with the programs shown in FIGS. Read-only memory that stores (
ROM), 3 is a random memory that temporarily stores processing data.
Access memory (RAM), 4 is line (telephone line) 3
1 to the public line network 50, and performs call path control for data communication with a counterpart device 60 such as a facsimile machine connected to the public line network 50, and connects to the connected extension line. This is a line switching circuit that controls communication paths with telephones that are
2 to 104) are connected. The line switching circuit 4 controls the communication path between each connected line according to the control signal 48 from the control circuit 1, and controls the line 31 and telephones A-C (102 to 10).
4) Performs communication path control between the telephones A and C (102 to 104) and between the line 31 and the hybrid circuit 6.

Although only one line 31 is shown here, other lines are naturally connected to the ACU 26, which will be described later.
A hold tone generation circuit 27 and a called detection circuit 28 are similarly connected.

6 is a hybrid circuit that separates the transmitting system signal and the receiving system signal in the signal connection between the facsimile machine side and the line switching circuit 4 side, and 7 is the signal from the V21 modulator i and the V27/V29 modulator 12, which will be described later. and the signal of
An adder circuit 8 that outputs a transmission system signal to the hybrid circuit 6 is a V21 modulator that modulates the procedure signal 36 from the control circuit 1 based on the well-known CCITT recommendation V21. 10 sequentially scans and reads the set transmission document line by line in the main scanning direction,
This is a reader that converts into a digitized signal and outputs it as a read signal 33, and is composed of an imaging device such as a charge-coupled device (COD) and an optical system. The configuration of this reader 1O is well known, so its explanation will be omitted. 11 is an encoding circuit that encodes the transmission system signal 33, which is a binary signal from the reader 10, into an MH (Modified Huffman) code or an MR (Modified Read) code, and 12 is a V27/
V29 modulator, known as CCITT Recommendation V27te
Modulation based on r (differential phase modulation) or CCI
This is a modulator that performs modulation based on TT Recommendation V29 (orthogonal modulation). The modulated signal output 35 of the V27/V29 modulator is input to the above-mentioned adder circuit 7.

13 is a timing generation circuit that generates an operation clock signal for the control circuit 1 and timing signals for data transmission, etc.; 14;
is a data transmission control circuit that controls the transmission of data such as information on the remaining amount of recording paper between the extension telephone and the line control unit under the control of the control circuit 1; Binarized digital data is used between the two. Then, for example, an FSX modulated signal is output to the telephone. Since these controls are well known, detailed explanation will be omitted.

15 is V21 which demodulates the received signal sent from the hybrid circuit 6 based on the well-known CCITT recommendation V21.
It is a demodulator, and the demodulation procedure signal 3 from the V21 demodulator 15
8 is sent to the control circuit 1, and the control circuit 1 executes reception control using a transmission control procedure according to the known demodulation procedure signal 38. In addition, 16 is the well-known CCITT recommendation V27ter (
Differential Phase Modulation) or CCITT Recommendation V2
This is a V27/V29 demodulator that performs demodulation processing of the received signal sent from the hybrid circuit 6 based on V.9 (orthogonal modulation). A decoder 17 performs a known decoding process, such as MH (Modified Huffman) decoding or MR (Modified Read) decoding, on the demodulated signal 39 from the V27/V29 demodulator 16 or the readout signal from the memory circuit 23. The decoded data 40 is sent to the printer 18. The printer No. 18 is a known printer that prints out data according to the decoded data 40 every l lines in the main scanning direction. A roll of recording paper is set in this printer 18, and on the back side of this roll of recording paper, a black band indicating the near end is written over a predetermined distance from the end of the recording paper ( printed). In this embodiment, the near end mark length is 5 m. The printer 18 is equipped with a near-end mark detection section 18a that detects this near-end mark, and the near-end mark detection section 18a sets the detection signal 41 to "0" when it does not detect the black belt that is the near-end mark. , outputs "1" when detected.

Reference numeral 19 denotes a receivable line number memory that stores the amount that can be output on recording paper when data is received in the standard mode (3.85° C./mm 2 ), that is, the number of receivable lines. When writing data to the receivable line number memory 19, the control circuit 1 outputs write data to the data signal line 42 and then outputs a write pulse W to execute the write process, and when reading stored information, it outputs a read pulse R. is output, and the data on the data signal line 42 is read at the timing when the stored data is read. 24 is an ACU that sends a telephone number signal corresponding to the telephone number output from the control circuit 1 to the public line network 50 via the line switching circuit 4; 25 is a power supply circuit that supplies operating power to the telephone; for example, A voltage of 24V is supplied on the signal line.

Reference numeral 26 denotes an operation section which is equipped with a telephone number key, abbreviation key, one-touch dial key, etc. in the facsimile section and inputs various operation instructions, etc.; 27 is an on-hold tone generation circuit that sends out on-hold tone on the line according to instructions from the control circuit 1; 28 is a called detection circuit that detects a called signal from the line; 29 is a telephone number signal detection unit that detects a telephone number signal sent to the connection line; in this embodiment, the telephone is a button telephone; Since 31 is also a button telephone line, it detects DTMF signals, but it goes without saying that it may be configured to be able to detect dial pulse signals depending on the type of connection line. Then, the telephone number signal from the extension telephone is decoded, and if the connection request is to another extension telephone, a communication path is formed with the corresponding telephone, and if the request is to make a call to an outside line, the corresponding request is made. This is for connecting the telephone to an outside line and making it possible to make outside calls.

The control device of this embodiment having the above configuration reads a transmission document from the reader 10, encodes it in the encoding circuit 11, modulates it in the V27/V29 modulator 12, and modulates it in the V27/V29 modulator 12 when transmitting transmission data in normal times. This is performed by adding the signal together with the procedural modulation signal 37 from the modulator 18 in the adding circuit 7 and transmitting it to the other party's device 60 etc. via the hybrid circuit 6 and line switching circuit 4.

Since these processes are well known, detailed explanation will be omitted.

Also, data received from the other party's device 60 during normal operation is received by the line switching circuit 4, and the hybrid circuit 6, V27/V
The signal is demodulated by the H.29 demodulator 16, temporarily stored in the memory circuit 23, or directly output to the decoding circuit 17, where it is decoded and printed out by the printer 18. The procedure signal is then demodulated by the V21 demodulator 15 and sent to the control circuit 1.

Since these normal reception processes are also well known, detailed explanation will be omitted.

Next, telephones A to C (12
1 to 124) will be explained in detail below with reference to FIG.

In Fig. 3, 201 is a built-in ROM 201a.
A control unit 202 executes control of the entire telephone set of this embodiment according to the program shown in FIG. 205 or an extension interface connected to the control unit 201; 203 is a handset; 204 is a signal tone generation circuit that outputs various signal tones to the line; 205 is a speaker circuit for monitoring speech sounds on the line. , 206 is a keyboard including a numeric keypad for inputting a telephone number, 207 is a display unit that displays various displays under the control of the control unit 201, 210 is a data interface that controls the interface with the data transmission control circuit 14,
211 is a timing generation circuit that generates an operating clock signal for the control unit 201 and a timing signal for data transmission at the data interface 210, and 212 is a power supply circuit that receives power supplied from the power supply circuit 25 and supplies it to each component. be.

Further, 213 is a recording paper remaining amount display unit for indicating that there is sufficient recording paper remaining in the control device 150, and when a signal of signal level “0” is output to the signal line 222, this This display is not performed when "l" is output. Reference numeral 214 denotes a receivable number display section that receives and visually displays the receivable number of sheets outputted from the control device 150 to the signal line 221.

In normal telephone calls, when the line switching circuit 4 selects a connection line and outputs a called signal, a ringing tone is output in response to the called signal. When the operator hears this and picks up the handset 203 of the telephone, a DC loop is formed in the line, and the line switching circuit 4 detects this, detects a response from the telephone, and forms a communication path.

In this embodiment having the above configuration, when image information communication processing is being performed between the facsimile units 152 of each control device 150 on the sending side and the receiving side, a telephone connected to the receiving side device When the recording paper of the receiving device reaches its near end, the number of remaining receivable sheets can be recognized, and appropriate processing can be performed before the paper runs out.

An outline of the operation of this embodiment having the above configuration will be explained below.

When the near end mark detection section 18a of the facsimile section 152 of the control device 150 does not detect the near end of the recording paper, the recording paper right display circuit 213 of the telephone displays the presence of recording paper. Then, when reception is performed and the recording paper reaches the near end, the control circuit 1 notifies the telephone via the data transmission control circuit 14 of the recording paper near end (for example, a PIF (facsimile information field) having a
RI-EOP signal). At the same time, the record paper right display circuit 213 of the telephone is deenergized to erase the record paper right display.
From then on, always use standard mode (sub-scanning line density is 3.85β/m
Check the remaining number of receivable lines in m). in particular,
Immediately after the near-end mark is detected, the remaining recording paper is 5 m,
It can be found by dividing this by the sub-scanning line density. This value is then stored in the receivable line number memory 19. From now on, the number of output lines can be subtracted each time information is output.

At this time, if receiving in standard mode, the value in the receivable line number memory 19 is subtracted by one every time one line of data is received, and if receiving in fine mode, two lines of data are received. Each time, the value in the receivable line number memory 19 is subtracted by one.

When image information reception processing is executed, the number of recordable lines per page is determined from the information size to be transmitted, which is specified by the synchronization procedure processing, etc., and the remaining number of receivable lines is divided by this value, and the number of lines below the decimal point is calculated. Round down to find the number of receivable sheets. At this time, even if a long original is received, for example, the telephone can accurately display in real time the number of originals that can be received with a standard length in the sub-scanning direction for the size of the original that is being received afterwards.

The details of the above operation control are shown in Figures 4 (A) to (C) and 5.
The process will be explained below with reference to the flowchart shown in the figure.

First, the communication control operation of the control device 150 shown in FIG. 2 will be explained with reference to FIGS. 4(A) to 4(C).

When the control device 150 is powered on, the process proceeds to step S1, instructs the line switching circuit 4 to open the line 31, and in the subsequent step S2, indicates that the near end mark detection unit 18a in RAMa has detected a more end. FBLK
Reset the DF flag to “O”. Next step S3
The recording paper right display circuit 213 is deenergized and the "recording paper present" display disappears. Then, in step S4, it is monitored whether a call request is made manually by inputting a one-touch dial or abbreviated dial on the operation unit 26, or whether the handset 203 of the connected telephone is off-hook and a call request is made. If there is a call request, the process proceeds to step S5, and it is checked whether or not the facsimile communication transmission mode is set at this time.If the facsimile communication transmission mode is not set, the process proceeds from step S5 to step S6, and a known predetermined telephone line is set. Performs call processing. "On the other hand, in the case of facsimile transmission mode, step S5
The process then proceeds to step SIO, instructs the line switching circuit 4 to form a DC loop on the line 31 and issue a call request, and connects the line 31 to the hybrid circuit 6. In the subsequent step Sll, a pre-procedure process is executed to send the document size information set in the reader IO, transmission mode information, etc., and processes such as synchronization with the receiving side apparatus are performed, and the process proceeds to step 512. Then, the transmission image information is read from the transmission document set in the reader 10, and one page is sent to the recipient, for example. Then, when the sending of the image information is completed, step S1
Proceed to step 3 to check whether there is still a document to be sent, such as when a document to be sent is still placed on the reader 10.
If there is a document to be transmitted, the process returns to step S12 and the next document is transmitted. At this time, if there is a change in the size of the original to be sent or if there is a change in the transmission mode, an intermediate procedure process that is almost the same as the pre-procedure process in step Sll is executed and new transmission status information is received. The data will be transmitted to the side device to establish synchronization, and then the process will proceed to step S12.

Note that if there is no document to be transmitted in step S13, the process advances to step S14, performs a known post-procedure process, and returns to step S68.

On the other hand, if there is no call request in step S4, step S4
0, the call detection circuit 28 checks whether or not a call has been detected from the line 31, etc. If the call has not been detected, the process proceeds to step S20, where the cover of the recording paper storage section of the printer 18 is in the oven. Then, it is checked whether the recording paper has been replaced and the near-end mark detection section 18a is in a state where it does not detect a near-end mark. If the recording paper has been replaced, the process returns to step S2; if it has not been replaced, the process returns to step S4.
Return to

On the other hand, when the called detection circuit 28 detects a called signal in step S40, if a telephone that should output a calling signal (should ring a bell) is specified, it will be output to the specified telephone; if not, all the telephones will be output. Make the phone output a ring tone. , and a predetermined number of times (for example, 3 times) in step S41.
It is checked whether or not a called signal has been received, and if the call signal has not been received a predetermined number of times, the process advances to step S20 to continue the call. If the handset 203 is picked up during that time, the call is made between the telephone and the calling party. A connection is established and a call is made.

If the handset 203 is not picked up even after receiving the called signal a predetermined number of times, the process advances from step S41 to step S42, instructs the line switching circuit 4 to respond by forming a DC loop on the line 31, and disconnects the line 31. Connect to hybrid circuit 6. Then, in the following step S43, it is checked whether or not data is received with a carrier signal, which is facsimile reception.

If no carrier signal is detected on the line, it is not a data communication, so it is assumed that the call is a mistake and step S44
The line is opened and restored, and the process returns to step S4. In addition,
If other specific processing is determined in step S44, that corresponding processing will be executed.

If it is a data signal in step S43, step S45
Then, pre-procedure processing, such as detection of various device states, is executed, and synchronization processing with the partner device is executed. Then, in the subsequent step S46, a process of receiving image information sent subsequent to the pre-procedure process is executed. At the same time, in step S47, the received information is sent to V27/V2 via the above-mentioned route.
The signal demodulated by the demodulator 16 is sent to the decoding circuit 17 without going through the memory circuit 19, and is printed out by the printer 18. Then, in the following step S48, it is checked whether the near-end mark detection circuit 18a has detected a near-end mark (black belt). If the near-end mark has not been detected, the process advances to step S65, where the recording paper presence display circuit 213 is deenergized and the "recording paper present" display disappears, and the process advances to step 866, where it is determined whether or not the last document information has been received. Find out. If it is not the last page, the process returns to step S48 and continues receiving the next page. If the last document has been received, the process advances to step S67, where a known post-procedure process is executed, and in the following step S68, the line 31 is opened and restored, and the process returns to step S4.

On the other hand, in step S48, the near end mark detection circuit 18
If a has detected the near-end mark, the process advances to step S50, and it is checked whether the FBLKD flag is "0" and has been reset. If it has been reset, the process proceeds to step S53, and if it has not been reset, (5000×3.85) is calculated in step S51 to determine the number of recordable lines from the near end mark and stored in the receivable line number memory 19. Next step S
In step S52, the FBLKD flag is set to "1" and the process proceeds to step S53.

In step S53, it is checked whether the communication mode is the standard mode. If the communication mode is standard mode, step S55
The process proceeds to step S56, where the value in the receivable line number memory 19 is subtracted by one each time one line of data is received, and the process proceeds to step S56. On the other hand, if the mode is not the standard mode but the fine mode, the process proceeds to step S54, and each time two lines of data are received, the value in the receivable line number memory 19 is subtracted by one, and the process proceeds to step S56.

In step S56, the size of the currently transmitted document (length of one page of recording paper) is checked to determine whether the document is A4 size, which is the standard document size. In the case of receiving an A4 size document, the process advances to step S57, where the value of the receivable line number memory 19 is read out, divided by the length of the A4 size document (297X3.85), and decimals are rounded down. Then, the number of remaining receivable sheets for an A4 size original is determined, and the information is notified to the connected telephone and displayed on the receivable sheet number display section 214 as described later. At step S59, the record paper right display circuit 213 of the connected telephone is simultaneously deenergized and the process proceeds to step S366.

On the other hand, if it is determined in step S56 that the document is not A4 size, in this embodiment, the other transmission size is B4 size, and therefore, in step S56, the receivable line number memory 19
Read the value and find out the length of the B4 size document (362
X3.85) and rounding down to the decimal point to determine the remaining receivable number of sheets for a B4 size document, which is notified to the connected telephone and displayed on the receivable sheet number display section 214. Then, the process advances to step S59.

In the above process, if the original size to be sent and received is not two types, A4 size and B4 size, but can be sent and received in any original size, the original length per page is calculated according to that size, and this value is calculated. The remaining number of receivable sheets can be calculated by

Through the above processing, the number of remaining receivable sheets is calculated every time one page of original is received, so even if the most recently received original is short or long compared to the specified size, , the remaining number of receivable sheets is accurately determined and displayed.

Next, referring to FIG. 5, the control of the telephone in the above processing by the control device 150 will be explained.

The control unit 201 checks in step 5IOI whether the data interface 211 has received a control signal from the data transmission control circuit 14, and if the control signal has not been received, checks in step 5102 whether there is any key input from the keyboard 206. . If there is no key personnel, the process returns to step 5101.

Here, if there is manual key power from the keyboard 206, the process advances from step 5102 to step 5103, where processing corresponding to the key manual power is executed, and after the corresponding process is completed, step 510
Go back to step 1 and prepare for the next key effort. For example, the corresponding processing is
When the handset 203 is off-hook and a telephone number key is input, the signal sound generation circuit 204 is instructed to send out a corresponding telephone number signal (DTMF signal, etc.), In the case of inputting a telephone number, the input number is temporarily held and then output together with a call request signal.

On the other hand, if a control signal is received from the data transmission control circuit 14, the process proceeds from step 5IOI to step 5110, where it is checked whether the received control signal is an energizing signal for the recording paper right display circuit 213, and the recording paper right display circuit 213 is checked. 213, the recording paper right display circuit 213 is activated in step 5ill.
is energized to display "recording paper present", and step Sl15
Proceed to.

If the reception control signal is not an energizing signal for the recording paper right display circuit 213, the process proceeds to step Sl12, where it is checked whether or not a deactivation signal for the recording paper right display circuit 213 has been received, and the recording paper right display circuit 213 is turned off. If it is a momentum signal, step 5113
The process proceeds to step 5115, where the recording paper right display circuit 213 is deenergized to erase "recording paper present", and the process advances to step 5115.

In step 5112, the received control signal is transmitted to the recording paper right display circuit 2.
If it is not the deactivation signal of Step 13, the process proceeds to step Sl15, and it is checked whether or not information on the number of receivable sheets has been received. If the information on the number of receivable sheets has not been received, step 511
The process advances to step 7, and if the information on the number of receivable sheets is received, the process advances to step 5116. In step 5116, the received number of receivable sheets is output to the receivable sheet number display section 214 to display the remaining number of receivable sheets, and the process advances to step 5117. In step 5117, processing corresponding to the received control signal is executed, and the process returns to step 5101.

As explained above, according to this embodiment, when data is received by the data communication device and the number of recording sheets remaining that can be output becomes small, the remaining number of receivable sheets can be known from a nearby telephone, and the information can be immediately transmitted. can be dealt with.

As a result, even if the telephone is placed on the desk and the facsimile machine is placed in the corner of the room, the recipient of the information can know when it is time to replace the recording paper while sitting at the desk. , appropriate measures can be taken.

[Second Embodiment] In the embodiment described above, an example was described in which "recording paper present" is performed only from a telephone connected to the receiving side device.
The receiving device may send the remaining number of receivable sheets to the transmitting device, and the transmitting telephone may simultaneously display the remaining number of receivable sheets in the receiving device.

As a result, the transmitting side can also recognize the number of sheets that can be transmitted, prevent unnecessary transmission, and take appropriate countermeasures.

[Third Embodiment] The above description has been given of an example in which the remaining receivable number of recording sheets is displayed on a telephone, but received manuscripts can be temporarily stored between the decoding circuit 17 of the facsimile unit 152 and the printer 18. In a configuration including a memory, the remaining received data may be controlled to be stored in this memory even after the recording paper runs out, and the number of sheets including the number of received sheets that can be stored in this memory may be set as the number of receivable sheets.

[Effects of the Invention] As explained above, according to the present invention, the amount of information that can be received by the receiving device can be recognized from the telephone, and even if the amount of information that can be received decreases, it can be quickly and appropriately corrected. countermeasures can be taken.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of an embodiment of the present invention, FIG. 2 is a detailed configuration diagram of the control device shown in FIG. 1, FIG. 3 is a detailed configuration diagram of the telephone of this embodiment, and FIG. A) ~ (C)
5 is a control flowchart of the control device of this embodiment, FIG. 5 is a control flowchart of the telephone of this embodiment, and FIG. 6 is a configuration diagram of a conventional telephone communication system. In the figure, 1...control circuit, 2.201 a...ROM,
3...-RAM, 4... Line switching circuit, 6... Hybrid circuit, 7... Adding circuit, 8... V21 modulator, 10... League, 11... Encoding circuit, 12
...V27/V29 modulator, 13...timing generation circuit, 14...data transmission control circuit, 15...V
21 demodulator, 16...-V27/V29 demodulator, 17...
...Decoding circuit, 18...Printer, 18a...Near end mark detection section, 19...Receivable line number memory, 24...ACU, 25...Power supply circuit, 2
6...Operation section, 27...Hold tone generation circuit, 28...Called detection circuit, 29...Telephone number detection circuit, 50-...Public telephone line network, 60...Destination device , 102-104... telephone, 201... control unit,
202... Extension interface, 203... Handset, 204... Signal sound generation circuit, 205... Speaker circuit, 206... Keyboard, 207... Display unit, 210-... Power supply circuit, 211...Data interface, 212...Timing circuit, 213...Record paper right display circuit, 214...Receivable number of sheets display unit. 1vA Figure 4 (B) Figure 4 (C)

Claims (3)

[Claims] (1) In a communication device system comprising a plurality of telephones and a plurality of data communication devices connected via a communication medium, a receivable amount detection means for detecting an amount of data receivable by the data communication device, and the receivable amount A transmitting means for transmitting the amount detected by the detecting means to the connected telephone, a receiving means for receiving the transmitted information from the transmitting means on the connected telephone, and a display means for displaying the received amount by the receiving means. Characteristic communication device system. (2) The communication device system according to claim 1, wherein the data communication device includes at least facsimile communication means, and the receivable amount is the number of pages that can be printed by the facsimile communication means. (3) The receivable amount detection means includes recording sheet near-end mark detection means, recognizes the number of remaining receivable lines after the near-end mark detection by the near-end mark detection means, and detects the remaining receivable number of sheets according to transmission conditions. The communication device system according to claim 2, characterized in that: